I would take them off of that because they are not a large breed of dog. They are a medium breed. Also, try what performanceknls suggested as it could just be a contact allergy and check back with us. I would also switch to a non grain dog food because a lot of dogs are allergic to grain and that could be the source of the redness. My dog had something similar on his stomach when I used to feed kibble.i feed deja puppy chow for growing large breed